Time Widget does not work when Time Extent From Layer is selected.

I set up the ArcGIS Viewer for Flex. I added the Time widget.
When I set up the Time Extent to use the Time Extent from Layer it does not work.
However, if I select Specific times and set the Start time and End time then it works correctly.
This suggests I have either not published the service correctly and there is a bug in the Widget.


Has anyone got it working correctly by selecting Time Extent from Layer.

Regards
Joseph Shanahan
ESRI Australia